Former Hawai'i football player Aaron Kia said he has been invited to participate in a tryout with the San Francisco 49ers this weekend.

If the tryout is successful Kia hopes to receive a free-agent offer. The tryout is part of the 49ers' mini-camp for rookies and free agents.

"I have to go there and be ready and be strong," Kia said.

Kia started 13 games at left tackle in 2009. He is being asked to audition at guard. The 49ers also would like to see Kia work out as a center.

"They like his height and his arm reach and his athletic ability," said UH offensive line coach Gordy Shaw, who met with more than 50 pro scouts during UH's Pro Day earlier this month. "He plays tremendously hard. He's a very aggressive football player . All of those things were positive."

Kia has had some experience at guard.

Shaw said Kia's one-on-one blocking skills are helpful in playing center against National Football League defenses that try to create isolation situations. Shaw said Kia can use the tryout to show "he can snap the ball, and (make the) snap-and-step (move)."

At Pro Day, Kia was measured at 6 feet 4, with an arm reach of 34 1/4 inches and a hand span of 10 1/2 inches. He bench pressed 225 pounds 25 times, and sprinted 10 yards in 1.74 seconds.

He said he weighs 290 pounds, and probably needs to add at least another 10 pounds.